X-ray spacecraft reveals strange ‘Cloverleaf’ radio circle in new light (image)
The space telescope XMM-Newton, operated by the European Space Agency and NASA, has taken an image of a giant cosmic “Cloverleaf” to reveal its mysterious origins. Cloverleaf is an example of a “peculiar radio circle” or ORC. These objects are strange bubbles of radio light so large that they can be thousands of times as… Read More »